Oprah Winfrey says she will focus on the people who she thinks are responsible for her talk show's success as she enters the final season - the viewers.

The 25th and final season of the US chat show queen's programme is set to air, and she said: "This year you will see lots of surprises for other people, dreams coming true for other people, really honouring the essence of what has made this show work for the past 25 years and that's the viewer."

"The last season is a celebration of the past 24 years. For me, it is about holding a place of reverence and honour for the people who made this possible for me: that would be the viewers," Oprah went on.

Oprah describes her show, which is syndicated to 145 countries, as having a cultural impact on her viewers around the world.

"I'm learning more about that and being more accepting of what that has been as I look over these 25 years and prepare to go into the last season - hearing stories about how the show has affected people's lives over the years," she said.

Oprah's farewell isn't a final goodbye - the star is set to launch her Oprah Winfrey Network, or OWN.